Evidence map›Paper›PMID 40976259›Full record

ArticleJournal of Korean Neurosurgical Society2026

Remote Spinal Subdural Hematoma Following Lumbar Biportal Endoscopic Surgery : Two Case Reports.

Sang Youp Han, Jae-Won Jang, Yong Eun Cho, Choon-Keun Park

Abstract readCase Reports
In one paragraph

Article in Journal of Korean Neurosurgical Society, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed.

  1. Article
  2. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Sang Youp HanDepartment of Neurosurgery, Spine Center, The Leon Wiltse Memorial Hospital, Suwon, Korea.
Jae-Won JangDepartment of Neurosurgery, Spine Center, The Leon Wiltse Memorial Hospital, Suwon, Korea.
Yong Eun ChoDepartment of Neurosurgery, Spine Center, The Leon Wiltse Memorial Hospital, Suwon, Korea.
Choon-Keun ParkDepartment of Neurosurgery, Spine Center, The Leon Wiltse Memorial Hospital, Suwon, Korea.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Remote spinal subdural hematoma (SSH) following unilateral biportal endoscopic (UBE) spine surgery is rare, even without intraoperative dural injury. We report two such cases. A 76-year-old woman underwent anterior lumbar interbody fusion and UBE decompression for lumbar spinal stenosis. Intraoperatively, dense adhesions were noted, but no cerebrospinal fluid (CSF) leakage occurred. Postoperatively, she developed left leg monoplegia. Magnetic resonance imaging (MRI) revealed a subdural hematoma at L2-3, remote from the surgical site. She recovered completely with steroid therapy and conservative management. An 88-year-old man underwent left-sided UBE laminotomy for central stenosis. The procedure was uneventful. Postoperative MRI revealed an incidental subdural hematoma from L2-4 without neurological deficits. He was observed conservatively. Both patients showed favorable outcomes without surgical evacuation. Remote SSH is a rare but important complication following UBE surgery. It should be considered when unexpected neurological deficits occur postoperatively, even in the absence of visible dural tears. Prompt diagnosis is essential for optimal management.

Indexed as

EndoscopyPostoperative complicationsSpineSubdural hematomaUnilateral biportal endoscopic

Identifiers

PMID40976259
PMCPMC12963886

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.